oj.uz

Submission #826585

# Submission time Handle Problem Language Result Execution time Memory
826585 2023-08-15T17:25:44 Z vjudge1 Jakarta Skyscrapers (APIO15_skyscraper) C++17
57 / 100
 219 ms 262144 KB 
#include "bits/stdc++.h"
using namespace std;
#define double long double
const int MAXN = 9500000;
const int MOD = 1e9 + 7;
mt19937_64 rng((int)std::chrono::steady_clock::now().time_since_epoch().count());
int rnd(int x, int y) {
  int u = uniform_int_distribution<int>(x, y)(rng); return u;
}
int bm(int b, int p) {
  if(p==0) return 1 % MOD;
  int r = bm(b, p >> 1);
  if(p&1) return (((r*r) % MOD) * b) % MOD;
  return (r*r) % MOD;
}
int inv(int b) { 
  return bm(b, MOD-2);
}
int fastlog(int x) {
  return (x == 0 ? -1 : 64 - __builtin_clzll(x) - 1);
}
void printcase(int i) { cout << "Case #" << i << ": "; }
vector<int>adj[MAXN];
int n, m, s, nxt;
void construct(int b, int p) { 
  for(int j=b%p; j<n; j+=p) {
    if(j+p < n) adj[nxt + j/p].push_back((nxt + j/p + 1) * 2 + 1);
    if(j-p >= 0) adj[nxt + j/p].push_back((nxt + j/p - 1) * 2 + 1);
    adj[nxt + j/p].push_back(j * 2 + 0);
  }
  adj[b].push_back((nxt + b/p) * 2 + 0);
  for(int j=b%p; j<n; j+=p) {
    nxt++;
  }
}
void solve(int tc) {
  cin >> n >> m;
  s = sqrt(n);
  nxt = n;
  int st, en;
  int bruh[s+1][s];
  for(int i=1; i<=s; i++) {
    for(int j=0; j<i; j++) {
      bruh[i][j] = -1;
    }
  }
  for(int i=0; i<m; i++) {
    int b, p;
    cin >> b >> p;
    if(i == 0) st = b;
    if(i == 1) en = b;
    if(p <= s && bruh[p][b%p] == -1) {
      bruh[p][b%p] = nxt;
      construct(b, p);
    }
    else if(p > s) {
      construct(b, p);
    }
    else {
      adj[b].push_back((bruh[p][b%p] + b/p) * 2 + 0);
    }
  }
  int k = nxt;
  int dist[k];
  bool vis[k];
  for(int i=0; i<k; i++) dist[i] = 1e9, vis[i] = 0;
  dist[st] = 0;
  deque<int> dq;
  dq.push_back(st);
  while(dq.size()) {
    int f = dq.front();
    dq.pop_front();
    if(!vis[f]) {
      vis[f] = 1;
      for(int x: adj[f]) {
        if(!vis[x / 2] && dist[x / 2] > dist[f] + (x % 2)) {
          dist[x / 2] = dist[f] + (x % 2);
          if(x % 2 == 0) dq.push_front(x / 2);
          else dq.push_back(x / 2);
        }
      }
    }
  }
  cout<<(dist[en]==1e9?-1:dist[en])<<"\n";
}
int32_t main() {
  ios::sync_with_stdio(0); cin.tie(0);
  int t = 1; //cin >> t;
  for(int i=1; i<=t; i++) solve(i);
}
// 勿忘初衷

Compilation message

skyscraper.cpp: In function 'void solve(int)':
skyscraper.cpp:84:17: warning: 'en' may be used uninitialized in this function [-Wmaybe-uninitialized]
   84 |   cout<<(dist[en]==1e9?-1:dist[en])<<"\n";
      |          ~~~~~~~^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 104 ms 223472 KB Output is correct
2 Correct 96 ms 223304 KB Output is correct
3 Correct 96 ms 223392 KB Output is correct
4 Correct 97 ms 223312 KB Output is correct
5 Correct 96 ms 223348 KB Output is correct
6 Correct 95 ms 223392 KB Output is correct
7 Correct 99 ms 223376 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 96 ms 223300 KB Output is correct
2 Correct 99 ms 223276 KB Output is correct
3 Correct 96 ms 223312 KB Output is correct
4 Correct 97 ms 223360 KB Output is correct
5 Correct 97 ms 223308 KB Output is correct
6 Correct 96 ms 223392 KB Output is correct
7 Correct 97 ms 223332 KB Output is correct
8 Correct 97 ms 223392 KB Output is correct
9 Correct 98 ms 223288 KB Output is correct
10 Correct 105 ms 223392 KB Output is correct
11 Correct 97 ms 223528 KB Output is correct
12 Correct 98 ms 223348 KB Output is correct
13 Correct 98 ms 223368 KB Output is correct
14 Correct 97 ms 223576 KB Output is correct
15 Correct 102 ms 223620 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 97 ms 223400 KB Output is correct
2 Correct 96 ms 223396 KB Output is correct
3 Correct 97 ms 223356 KB Output is correct
4 Correct 96 ms 223380 KB Output is correct
5 Correct 100 ms 223400 KB Output is correct
6 Correct 98 ms 223304 KB Output is correct
7 Correct 97 ms 223320 KB Output is correct
8 Correct 97 ms 223308 KB Output is correct
9 Correct 97 ms 223400 KB Output is correct
10 Correct 99 ms 223572 KB Output is correct
11 Correct 97 ms 223572 KB Output is correct
12 Correct 98 ms 223380 KB Output is correct
13 Correct 96 ms 223404 KB Output is correct
14 Correct 100 ms 223592 KB Output is correct
15 Correct 98 ms 223536 KB Output is correct
16 Correct 100 ms 223476 KB Output is correct
17 Correct 102 ms 223940 KB Output is correct
18 Correct 103 ms 223564 KB Output is correct
19 Correct 99 ms 223524 KB Output is correct
20 Correct 98 ms 223476 KB Output is correct
21 Correct 97 ms 223436 KB Output is correct
22 Correct 99 ms 223636 KB Output is correct
23 Correct 97 ms 223660 KB Output is correct
24 Correct 100 ms 223884 KB Output is correct
25 Correct 97 ms 223692 KB Output is correct
26 Correct 99 ms 223736 KB Output is correct
27 Correct 99 ms 223576 KB Output is correct
28 Correct 99 ms 224208 KB Output is correct
29 Correct 103 ms 225516 KB Output is correct
30 Correct 101 ms 224012 KB Output is correct
31 Correct 101 ms 224592 KB Output is correct
32 Correct 99 ms 224248 KB Output is correct
33 Correct 111 ms 227740 KB Output is correct
34 Correct 112 ms 227688 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 97 ms 223296 KB Output is correct
2 Correct 97 ms 223292 KB Output is correct
3 Correct 97 ms 223320 KB Output is correct
4 Correct 97 ms 223324 KB Output is correct
5 Correct 99 ms 223348 KB Output is correct
6 Correct 97 ms 223372 KB Output is correct
7 Correct 98 ms 223308 KB Output is correct
8 Correct 97 ms 223304 KB Output is correct
9 Correct 99 ms 223308 KB Output is correct
10 Correct 99 ms 223408 KB Output is correct
11 Correct 100 ms 223620 KB Output is correct
12 Correct 98 ms 223396 KB Output is correct
13 Correct 99 ms 223344 KB Output is correct
14 Correct 103 ms 223584 KB Output is correct
15 Correct 99 ms 223648 KB Output is correct
16 Correct 103 ms 223552 KB Output is correct
17 Correct 100 ms 223964 KB Output is correct
18 Correct 101 ms 223688 KB Output is correct
19 Correct 99 ms 223524 KB Output is correct
20 Correct 102 ms 223540 KB Output is correct
21 Correct 98 ms 223508 KB Output is correct
22 Correct 99 ms 223588 KB Output is correct
23 Correct 100 ms 223604 KB Output is correct
24 Correct 99 ms 223904 KB Output is correct
25 Correct 98 ms 223740 KB Output is correct
26 Correct 99 ms 223752 KB Output is correct
27 Correct 98 ms 223648 KB Output is correct
28 Correct 101 ms 224316 KB Output is correct
29 Correct 104 ms 225540 KB Output is correct
30 Correct 103 ms 224080 KB Output is correct
31 Correct 103 ms 224612 KB Output is correct
32 Correct 102 ms 224264 KB Output is correct
33 Correct 116 ms 227756 KB Output is correct
34 Correct 111 ms 227796 KB Output is correct
35 Correct 120 ms 227768 KB Output is correct
36 Correct 100 ms 224020 KB Output is correct
37 Correct 123 ms 230372 KB Output is correct
38 Correct 122 ms 229964 KB Output is correct
39 Correct 121 ms 229896 KB Output is correct
40 Correct 125 ms 229960 KB Output is correct
41 Correct 122 ms 229964 KB Output is correct
42 Correct 103 ms 224204 KB Output is correct
43 Correct 101 ms 224048 KB Output is correct
44 Correct 100 ms 223836 KB Output is correct
45 Correct 182 ms 241332 KB Output is correct
46 Correct 167 ms 241272 KB Output is correct

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 99 ms 223300 KB Output is correct
2 Correct 101 ms 223404 KB Output is correct
3 Correct 105 ms 223400 KB Output is correct
4 Correct 99 ms 223324 KB Output is correct
5 Correct 98 ms 223312 KB Output is correct
6 Correct 98 ms 223320 KB Output is correct
7 Correct 100 ms 223384 KB Output is correct
8 Correct 105 ms 223488 KB Output is correct
9 Correct 99 ms 223340 KB Output is correct
10 Correct 99 ms 223440 KB Output is correct
11 Correct 101 ms 223608 KB Output is correct
12 Correct 100 ms 223392 KB Output is correct
13 Correct 102 ms 223508 KB Output is correct
14 Correct 101 ms 223652 KB Output is correct
15 Correct 99 ms 223536 KB Output is correct
16 Correct 101 ms 223432 KB Output is correct
17 Correct 101 ms 223976 KB Output is correct
18 Correct 98 ms 223668 KB Output is correct
19 Correct 99 ms 223524 KB Output is correct
20 Correct 99 ms 223452 KB Output is correct
21 Correct 100 ms 223456 KB Output is correct
22 Correct 104 ms 223748 KB Output is correct
23 Correct 99 ms 223556 KB Output is correct
24 Correct 101 ms 223912 KB Output is correct
25 Correct 101 ms 223632 KB Output is correct
26 Correct 101 ms 223756 KB Output is correct
27 Correct 100 ms 223740 KB Output is correct
28 Correct 102 ms 224268 KB Output is correct
29 Correct 106 ms 225612 KB Output is correct
30 Correct 102 ms 224040 KB Output is correct
31 Correct 103 ms 224588 KB Output is correct
32 Correct 104 ms 224228 KB Output is correct
33 Correct 113 ms 227784 KB Output is correct
34 Correct 114 ms 227724 KB Output is correct
35 Correct 116 ms 227588 KB Output is correct
36 Correct 101 ms 224128 KB Output is correct
37 Correct 125 ms 230348 KB Output is correct
38 Correct 126 ms 229884 KB Output is correct
39 Correct 126 ms 229912 KB Output is correct
40 Correct 126 ms 229916 KB Output is correct
41 Correct 125 ms 229912 KB Output is correct
42 Correct 104 ms 224200 KB Output is correct
43 Correct 103 ms 224032 KB Output is correct
44 Correct 103 ms 223832 KB Output is correct
45 Correct 167 ms 241280 KB Output is correct
46 Correct 169 ms 241320 KB Output is correct
47 Correct 219 ms 251072 KB Output is correct
48 Correct 126 ms 232676 KB Output is correct
49 Correct 119 ms 229628 KB Output is correct
50 Correct 118 ms 229324 KB Output is correct
51 Correct 146 ms 236080 KB Output is correct
52 Correct 157 ms 237004 KB Output is correct
53 Correct 115 ms 227852 KB Output is correct
54 Correct 105 ms 224716 KB Output is correct
55 Correct 104 ms 225640 KB Output is correct
56 Correct 108 ms 225860 KB Output is correct
57 Correct 156 ms 239400 KB Output is correct
58 Correct 113 ms 226616 KB Output is correct
59 Correct 113 ms 227532 KB Output is correct
60 Correct 117 ms 229068 KB Output is correct
61 Correct 114 ms 228044 KB Output is correct
62 Correct 161 ms 242748 KB Output is correct
63 Runtime error 176 ms 262144 KB Execution killed with signal 9
64 Halted 0 ms 0 KB -